Figure 1. An overview to the chemical risk assessment(CRA) process, whereby risk is a function of hazard and exposure. While SR methods could in principle be applied to all steps of the CRA process, it is the view of the workshop participants that up to this point in time most attention has been focused on the hazard identification and hazard characterisation steps. There are issues around conducting a systematic review for exposure assessment which were not discussed at the workshop, such as the requirement for a very different tool for assessing risk of bias in exposure studies which may necessitate very specialised knowledge of analytical/environmental chemistry.